Ccd Agc - Xerox DocuColor 2240 Service Manual

15-385 CCD AGC

Automatic Gain Control (AGC) for CCD Channel 6 blue failed.
Initial Actions
• Verify that the Platen Glass is installed correctly
• Verify that NVM location 715-400 = 1
Procedure
Enter dC330 [6-002] and press Start. The Exposure Lamp illuminates.
Y N
Go to the 6-371 RAP.
The Exposure Lamp illumination is bright and steady.
Y N
Go to P/J722 (Figure 2) and P/J724 (Figure
circuit.
Verify that P/J742 on the Lamp Ballast PWB and
If the wires and connectors are good, replace the Exposure Lamp
If the problem continues, replace the Lamp Ballast PWB
If the problem continues, replace the IIT/IPS PWB
Remove the Platen Glass (REP 6.2). The white reference strip on frame under the Regis-
tration Gate is clean and undamaged.
Y N
Clean the white reference strip.
Go to P/J721 (Figure 3) and check the flat cable on the IIT/IPS PWB and
the CCD PWB for damage. Reseat the flat cable.
If the problem continues, replace the Lens Kit
If the problem continues, replace the IIT/IPS PWB
Initial issue
DC 3535/2240/1632
(REP 6.2).
1) and check the wires for an open or short
P/J724 on the IIT/IPS PWB are seated.
(PL 18.6).
(PL 18.6).
(PL 18.3).
P/J741 (Figure
(PL 18.4).
(PL 18.3).
Figure 1 15-385 RAP Circuit Diagram - Lamp Ballast
3) on
Figure 2 15-385 RAP Circuit Diagram - IPS Fan
02/03
2-311
Status Indicator RAPs
15-385